Pickguard & Metal Plate (BB2024X/2025X/1024X/1025X Series)
Nickel Silver Nut (BB2000/1000 Series)
A.R.E. Treatment and I.R.A. Technology (BB2000 Series)
Yamaha’s exclusive A.R.E. treatment is a special seasoning process that delivers a smooth, mature sound right out of the factory.
I.R.A. treatment, another Yamaha exclusive, is also applied to enhance body resonance.
A.R.E. (Acoustic Resonance Enhancement)
A.R.E. (Acoustic Resonance Enhancement) is an original wood reforming technology developed by Yamaha. Instruments made with woods processed with this technology produce a tonal richness that is like vintage instruments that have been played for years. This technology is currently applied to the BB2000 Series
A.R.E technology uses precision controlled humidity and temperature to manipulate the molecular properties of the wood into a more acoustically ideal condition (similar to the molecular characteristics of woods in instruments that have been played for years).
-The process is chemical free making it an environmentally friendly process as well.
-The following alterations lead to their corresponding acoustically ideal conditions.
The graphs shown to the right are from actual acoustic spectral measurements taken under controlled conditions with an untreated BB bass and a new BB bass with A.R.E. Notice the enhanced low range sustain and the leveled mid-low frequencies that deliver a smoother and well-defined sound on the A.R.E bass. It is also clear that high frequencirs have a shorter decay after the attack providing sharper tones.
This is hard proof that A.R.E. is effective at producing the desired changes in the wood's acoustic characteristics.
These instruments have received high marks from a great number of bassists. Most of their evaluations are identical to evaluations for basses that have been played for years.
I.R.A. (Initial Response Acceleration)
If you've ever played another guitarist's instrument and not been able to get the same sound, it's probably because you are playing a different style than what the guitar is used to. After playing the same guitar for years, the guitar adapts to adapt to your own way of playing. Stress found between parts like finish, woods, body, neck, fingerboard, nut, bridge, etc., must be released before all of the parts can playing for this to happen.
Using IRA technology, stresses like those between the finish and wood are release by applying specific vibrations to the completed guitars. Once this treatment is complete, the guitar responds accurately to the guitarist's performance, and produces sound more easily. If also shortens the time needed for the guitar to adapt to your playing style. And it delivers excellent sustain.